Sucker-rod packing for oil-well tubings.



NGS.

C. A. WAITZ. SUGKER ROD PACKING FOR OIL WELL TUBI APPLIUATION FILED Pimm; 1912.

Patented May 6, 19134 lltlllll CII l of as will be hereinafter CHARLES A. WAITZ, F ROUSEVLLE, PENNSYLVLIA.

encarna-non sacarse. ros, OIL-wann susi-nas. j v

insonni,-

saeciacation of Lamm raient.

'Patented lf2/lay 63., 333913.,

Application fled February' 2e, 1912. Serie! No. 579,590.

To all 'whom e'zfinay concern: d

Be it. known that I, CHARLES A. Viairz, a citizen of the United States` resid-ing at Rouseville, in the county of Venango and State of Pennsylvania, have invented new and useful Improvements in Sucker- Rod Packings for Oil-Well Tubings, of which the following is a specification.

rlhis invention relates to sucker rod packings for oil well tubings and consists in certain improvements in the construction therefully described and pointed out in the claims.

The cominon'practice for forming a closure "fetween the sucker rod and the tubing involves the use of what is commonly known as a polished rod forming an extension of the sucker rod, the polished rod extending through a stufing box at the top of the tubing. This construction is open to certain objections, one of the principal ones be infr that the polished rod, so called, being le t in an exposed position while the pump is not in operation becomes corroded and thus interferes with its ready movement through vthe stuiiing box. ln consequence of this together with the vibration of the polished rod, it is difficult to maintain a closed joint in the stuiiing box where any pressure is encountered and in many wells either by reason of the head against which the oil is pumped or the operation otl the in the tubing flowing the oil at intervals, the stuffing box is subjected to consid erable pressures and where there is some leakage there is a considerable loss ot oil. lt is also dillicult to lubricate this polished rod, the oil being pumped being 'often so mixed with salt water as to be of little utility for this purpose.

The primary objects of my invention are. directed to overcoming the objections above noted.

Further objects as to detailsot' construction will appear from the speciication and claims.

The invention is illustrated in the accompanying drawings wherein a central vertical section of the top of an oil well is shown.

l marks the casing, 2 the casing head, 3 the casing top, 4 the tubing7 5 the tubing ring resting on the casing top and 6.a coupling on the tubing resting on the. ring 5.

A T 7 is screwed onto the top ot Vthe tub! ing and the lead line or discharge pipe 8 leads from this T. 9 marks the sucker rod which as shown is of the iron rod type. 10 marks the sucker rod adjuster. These are of ordinary construction.

A polished ,tube l1 extends downwardly from the top of the tubing, being secured to the l 7 by means of a bushing 12, the bushing being screwed into the top of the T and the polished tube 11 being screwed into the bushing. A hollow rod 13 is arranged around the sucker rod and extends into the polished tube l1. The lower end of the hol low rod 13 is reduced and screw threaded at 14. An upwardly faced cup 15 is arranged on this reduced portion and two downwardly faced cups 1G and 17 are arranged on this reduced portion, the rings 18, 19 and ZO'being placed to properly secure the cups and the nut lbeing screwed onto the lower end to secure the rings in. place. A clamp fitting and stuffing box 2Q is secured to the upper end of the hollow rod 13 by means of the yset screw 23. It has the pocket 24 in which a packing material 25 is placed to prevent the escape of gas.

The opening through the bushing 12 is preferably somewhat larger than the hollow rod 13 so as to allow t'or any swaying of the sucker rod-that there may be incident to the kind of actuating mechanism used. A floating washer 26 is arranged on the hollow rod above the bushing 12 so as to form such a closure as to exclude dirtl at the top.

A lubricant is placed in the hollow tube 11 and is maintained in this tube by the upwardly faced cup 15. A good grade of lubrijcant may be used for this purpose so that the packing formed is always well lubricated.

ln the operation of the device the oil as it is pumped from the well passes outside the polished tube between the polished tube and the tubing andis discharged to the lead line 8. The downwardly faced cups 1G and 17 prevent any outward iow "of liquid through the polished tube and with pumps of ordinary construction the cups 15 and 1G would by reason of the displacement on the downward stroke displace some of the liquid from the tubing. It will be observed, however, that a perfect closure is maintained bv means ot' the cups 1S and 17 anu that lubricant is maintained by means of the cup 15 and that the joint formed by the packing is thus farther away from the pump actuating mechanism than is possible where 'the packing is at the top of the well so that the swaying ofthe sucker rod has less effect upon'the ioo los'

polished tube extending. dowiiwuixlly into l the tubing; u sucker rod, extending through the polished tube; und it packing Secuiod to the .sucker rou and operating in tivo1 polished. tube to form :1, Sucker rod closure Yloithe tubing.

In :L sucker rod packing foi" oil Well tubings, the combination of u Well tubing; polisliocl tubo extending' downwardly from the upper end of the tubing und leaving; Space between the polishod tube und. the well tubing for the, cliiolmrgo of oil from the tubing; :i Sucker rod extending through the polished tube; und u packing secured to the sucker roel. and operating in the polished tube to form a Suclteih rod closure lor the tubinf. L

3, ln u sucker rofl packing yfor oil woll tubings, the Combination of zi well tubing; :L

polished tube extending downufuruly into the tubing; a bushing' screwed into the tub-"l lug :intl on lo the polieihod tube il'foi shouting ih@ polished 'l'uuo in plus@ iu the will tubing:

u Suclqoi rod oxlciicling lhi'ough the polished '1m tul, i; und u. pitching secured to the Sucher i'oil und oijii'uting iii tho polishml tubo foi' .forming u Suolioi' i'oil Closiui'o lfoi' thc woll tubing. v

1l. in u suc-hoi rod puc-lung toi' oil. Woll tuliiug, the oouibiimtion ot :L woll tuhin` polished i'offl extending into the, woll tubing; u bushing Sci-owed Yinto the vwoll tubingnud on to the polished tubo forv scouring; the polished tube in place in the woll l'uhiugg; u sucker roti oxtondingg through lh@ imliiahol tubo; :ipucliing Secui'oifi to lh@ Sucher rml und opoiziling in the polinhorl tubo toi' 'forniing u Sucker' rod closures for tho Woll tubing; und u floating was ier arranged ou the sucker rod und. over th@y bushing.

in testimony whoi'ool" l hawy horouul'o Sol; my hand in the presence o'l two Subsci'il'iingi witnesses.

CHARLES En. WAjT, 

